The original IS3 didn't have much for barrel elevation to begin with. I'm not sure but 5 deg down and 15 up should be enough. I am going to set the servo limits in the radio.
As for the 3d print. I had thought of that. Can you make the cast steel look on the outside with the 3d print?
Still have many things to figure out. Servo recoil shouldn't be too bad. Plan is to mount the servo on the side of the metal bracket.

Finally received some more parts needed. Man, that boat from China is slow. Ha haa.

Made a bracket for the elevation servo. Reinforced on the bottom.



Installing a better sleeve in the mantlet. Had to drill this by hand! Uhg




Test fit of the tube. 18mm OD, 15mm ID


Tube cut to length


Nice tight fit!


Barrel slides nice


Next is the servo recoil. Hole will be cut in the side metal to hold the servo. Cheers!

Damn! It's been 5 months since I touched this. Finally getting motivated again. Thanks Mike for the goodies! And for the next project. Ha haa.

Barrel recoil installed


Grievious


Turret hatches. I am thinking the TBU is going on the right. Want the base to be as low mounted as possible.


I had to get a high torque servo that runs on analog. Barrel is kinda heavy!

Had a friend from work machine me an adapter for the muzzle brake. Fits sweet!



Figuring out turret rotation. Got these small gearboxes. Full size ones wont fit in the profile. And I already got the smoker hole kinda in the way.
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LOL... The time delay is you giving Cindy all her space for painting!
You are welcome for the goodies though. You've done a hell of a lot for me. I'm likely to abuse you more in the future... And I cannot send alcohol in the mail to you (Useless Post)….

I'm a bit iffy on the elevation you have, but love the sleeved barrel (I do that on a lot of my tanks that I "fix-up" as well).

Did I send you a TBU base?

Useless Post here too! I had a servo op rod sit at the distribution center in Rochester for 17 days. Cindy sent one of her creations to a guy in Vancouver BC. She mailed it on Dec 9th. It arrived this past Thursday.   FedEx and UPS aren't much better at the moment.
As for the TBU base, I'm pretty sure I have one lying around somewhere. I'll let ya know if I can't find it.
Cheers

Coming along well Chris, you should have it finished when the Covid gets lifted in Sept. Just in time for Aquino! :-)

This is giving me so many flashbacks! Those turret servos are fun eh?

Happy Pi day! Getting some turret stuff worked on. 

DShK goes here. Thanks Mike!


Jordan, getting these bars uniform were a BE Otch! I still have to get them uniform in height and glued in. I have a couple more bars to make yet but I ran out of material sent with the kit. Made a couple mistakes to start. So, that is ordered and on the slow boat from China.



Working on the TBU height. Want it as low as it can go. Toying with the idea of removing the hatch during battles. Regardless I will have to make some kind of external hit indicator.

That's a lot of fiddly bits for appearance... Looks great, but not my thang!

Thank Dean for the DShK.

I had been meaning to ask you about the DShK.   Thank you both.

Quite the project! Looking good.

Hah! Oh those crazy rails.. I used a bunch of copper welding rod Dean gave me eons ago; I could tell the original tanks were NOT uniform, so I just bent a bunch to their rough finished shape and THEN drilled the holes. Much more RUSSIAN that way

More stuff done. Turret electronics installed and tested. Need to program the servo elevation yet. Servos powered by 10A BEC through the receiver. 
Cheers.
 And I completely agree comrade. The bars aren't completely uniform.

I have to send you those sprockets for your turret....